Typewriting-machine



J. WALDHEIM.

TYPEWRITING MACHINE- APPLICATION FILED 05c. 20, 1919.

Patented Dec. 28, 1920.

3 SHEETSSHEI I.

J. WALDHEIM.

TYPEWRITING MACHINE.

APPLICATION FILED 050.20. 1919.

Patented Dec. 28, 1920.

3 SHEETS--SHEEI 2.

J. WALDHEIM.

TYPEWRITING MACHINE.

APPLICATION FILED 050.20, 1919.

1,363,294, Patented Dec. 28,1920.

3 SHEETS-SHEEI s.

UNITED STATES I A I'ENT OFFICE.

JOHN WALDHEIM, F ELIZABETH, NEW JERSEY, ASSIGNOB TO UNDERWOOD TYPE-WBITER COMPANY, OF NEW YORK, N- Y-, A CORPORATION OF DELAWARE.

TYPEWRITING-MACHINE.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed December 20, 1919. Serial No. 346,324.

To all whom it may concern;

l at the same surface speed therewith, but in Be it known that I, JOHNWALDHEIM, a citizen of the United States, residin in Elizabeth, in thecounty of Union and tate of New Jersey, have invented certain new anduseful Improvements in Typewriting- Machines, of which the following isa spec1- fication.

This invention relates to typewriting machines, and more particularly tomeans for feeding a pack of work-sheets or webs around a cylindricalplaten, such as disclosed in my prior application, Serial No. 268,184,filed December 24, 1918.

In the machine disclosed in said application, the work-sheets, insteadof being advanced by the platen, are drawn around the same by means oftwo paper-feeding elements or rolls on the delivery side of the platen,said rolls engaging the pack of work-sheets on opposite sides, and beingrotated at equal speeds in opposite directions, thus avoiding creepingof the work-sheets on each other.

An object of the present invention is to I in number, to cooperate withthe main feedroll, the front feed-rolls having their shafts connected byuniversal joints and being geared to said main feed-roll so as to rotatethe opposite direction. As a result of this arrangement, the outer sheetwill be fed past the printing line at substantially the same speed asthe inner sheet, thus obviating the creeping which takes place when thework is fed by the platen itself.

Provision is or may be made of a fingerpiece carried by theplaten-lifting frame, and of means whereby movement of said finger-pieceto a certain extent will eifect release of the middle or central frontroll only, and movement further will effect release of the end rolls aswell. Release of all the rolls may be effected manually when it ISdesired to insert work-sheets between the feed-rolls, suitable meansbeing provided to malntam the finger-piece in its actuated position. J

When the platen frame is swung forwardly to lift the platen, thefeed-rolls will be disconnected from the usual line-spacing mechanism,and the finger-piecewill be actuated by suitable means on the carriage,to release the middle roll, and will be maintained in fixed positionwith respect to the l ft ng frame during the latter part of the liftlngmovement of the lifting frame. When the lifting frame is nearing the endof 1ts forward swing, the main feed-roll will be actuated by anauxiliary drivingmeans, and, since the end rolls are in position tocooperate therewith, the record-sheet will be advanced.

It may be desired at times} to reversely feed the work-sheets. To thisend, a oneway connectionis provided between the linespace wheel and theplaten when the latter is in its normal position. In order that theplaten may be eifective to reversely feed the work-sheets, provisionmaybe made of feedrolls which are normally in ineffective position withreference to the platen, but which are positioned to coiiperatetherewith when reverse feeding is to be effected. In order to enablesuch reverse feeding, however, it may be necessary to release thefeed-rolls from their auxiliary feeding means. Suitable provisions maybe made for this purpose.

It will be seen that the arrangementand manner of support of the frontfeed-rolls enable. them to adapt themselves to the varying thicknessesof the work, due to the grfiater number of sheets beneath the middle r0Other features and advantages will hereinafter appear.

Fig. 3 is a. front elevation, parts being broken away to show theunderlying structure.

Fig. 4 is a sectional side elevation, showing the connections by meansof WlllCll th'e paper-feeding elements are actuated.

Fig. 5 is a sectional side elevation, showing the lifting frame swungforward far enough to release the central roll, wh1ch normally engagesthe front of the work.

Fig.6 is a sectional side elevation, showing the,swing frame in itsllmlting forward position, with the parts in the sumed at the end of therecord-s eet-advancing operation.

A ack of 'work-sheets 10 is led over a cross-Imi- 11 of a carriage 12,extending rearwardly from the typewriter carriage l3, and, together witha record-sheet 14 of greater width, is led over a shaft 15, supported onthe typewriter carriage 13, and downward to pass between the platen 16and a paper-guide 17. Carbons 18, 1nterleaved between the work-sheetsand the record-sheet, are connected with bars 19 of a carbon-carriage20, mounted for sliding movement on rails 21, supported on carriage 12.After passing the platen 16 and the paper-guide 17, the work-sheets areled upwardly and rearwardly to a paper-table 22, carried by aplaten-lifting frame 23, pivoted on shaft 24 in the typewriter carriage,and in which the platen is supported by means of an axle 25.

The normal position of the lifting frame 23 is determined by arms 26,formed on the ends thereof, engaging shaft 15, and said lifting frame isheld in its normal position by means of a finger-piece 27, mounted onshaft 15, said finger-piece being urged by a spring 28 into position tocause a hook 29 thereon to engage a pin 30 on said lifting frame. Ifdesirable another hook 29 may be fixed on shaft 15 in position tocoiiperate with another pin 30 at the other end of the lifting frame 23.

In carrying out the present invention, the work-sheets may be fed pastthe printing point,to enable type-bars 31 to print thereon, by means ofa main feed-roll 32 engaging the rear side of a pack of work-sheets andsecondary or auxiliary feed-rolls engaging the ack of work-sheets on thefront side thereof? a middle roll 33 and end rolls 34 to engage themargins of the record-sheet 14, which extend beyond the pack ofwork-sheets. It will be understood that the work-sheets are drawn pastthe platen, and serve to rotate the latter. In order that the pack ofworksheets may be fed alOIlg the paper-table 22, provision is made of aslot 35 in said papertable through which the main feed-roll 32 projectsfrom the back where it is supported by means of its shaft 36 journaledin the ends of the lifting frame 23. As indicated ositions assaidsecondary rolls comprising in Fig. 2, the record-sheet 14, after passingthe main feed-roll 32, is led through the slot 35 to the rear of thepaper-table 22. The middle auxiliary roll 33 is supported by means ofits shaft 37, which rests in open bearings in arms 38 fixed on the shaft24, and the end rolls 34 are supported by means of their shafts39-journaled in pairs of arms 40, preferably formed integrally withsleeves 41 mounted loosely on shaft 24.

At the right-hand end of shaft 24 is fixed an arm 42 through which theangular osition of said shaft may be controlled.

rovision is also made of a bell-crank 43 pivoted at 44 on the right-handend of the lifting frame 23, and having a finger-piece 45 at the endofits upwardly-extending arm 46. Normally, the finger-piece 45 is urgedtoward the front of the machine by means of a. spring 47 connected atone end to the lifting frame 23, and at the other to theforwardly-extending arm 48 of said bellcrank 43. The spring 47 actsalso, by means of pin 49 projecting from arm 48 into a slot 50 in arm42, to urge roll 33 toward the main feed-roll 32. In connection withthis action, shaft 36 is maintained in the open hearings in arms 38 byleaf springs 51, and the urging of arms 38 toward the main feedroll 32is transmitted by means of leaf springs 52 to an arm 40 on each sleeve41, thereby urging the end auxiliary rolls 34 toward the main feed-roll32. Preferably, the leaf spring 5.1,and the leaf spring 52, carried byeach arm 38, are formed integrally with each other, as is clearly shownin Figs. 1 and 3.

When finger-piece 45 is moved to the rear, the-middle roll 33 will bewithdrawn from the main feed-roll 32 against the urging of spring 47.The position. of the end feedrolls 34 will not, however. be affecteduntil pins 53 on arm 54, projecting from the hubs of arms 38, engage theadjacent arms 40 of the pairs of arms supporting the end rolls 34. If,then, the finger-piece 45 be moved farther to the rear, the end rolls 34will be withdrawn from the main feed-roll 32.

Withdrawal of the middle feed-roll 33 only may enable a pack ofwork-sheets to be inserted without change in position of therecord-sheet, and also may enable an advance of the record-sheetindependently of the pack of work-sheets, as will be more fullydescribed hereinafter. Obviously.

withdrawal of the middle and end auxiliary vrolls in effective position.The pin 55 may be withdrawn from the depression 56 by manual operationof the finger-piece 45.

In order that the auxiliary feed-rolls ma be driven in unison withoutinterfering wit 1 the release of the middle roll 33 independently of theend rolls 34, provision is made of suitable connections, such asuniversal joints 58, between the adjacent ends of shafts 37 and 39. Theleft-hand shaft 39 is provided with a pinion 59 meshing with a pinion 60on the shaft 36 of the main feedroll 32 to insure a uniform feedingmovement of the various work-sheets. It should be understood that theteeth of pinions 59 and'60 are of sufiicient length that the saidpinions will not be entirely unmeshed by the release or withdrawal ofthe end rolls 34.

Line-spacing of the work-sheets, when the platen is in its normalposition, is effected by means of a line-space lever 61, which movesslide 62, and, by means of a pawl 63 pivoted on slide 62, effects a one,two or three line-space movement of the line-space ratchet wheel 64, inaccordance with the position of the regulator lever 64 of the usualUnderwood Iinespacing mechanism. The

regulating means may be substantially the same as that disclosed in, thepatent to Alfred G. F. Kurowski, No. 1,190,658, dated July 11, 1916.

The ratchet wheel 64 is fixed on one end of a short shaft 65 supportedby the carriage, and having at its other end a gear. 66 normally meshingwith a pinion 67 carried on the lifting frame and meshing with pinion orgear 60. It should be understood that c the train of gearing is sodesigned that the advance of the worksheets, by means of the main andauxiliary feed'rolls, is the same as would be effected by a direct driveof the platen by the line-spacing mechanism, the

' position of the regulator lever 64 being the same in both cases.

In order to maintain the feed-rolls in any position to which they havebeen actuated when feeding or advancing the work-sheets, provision ismade of a detent wheel 68, in the form of a star wheel fixed on shaft 36of the main feed-roll 32, and of a detent roll 69 to engage therewith,said detent roll being rotatably mounted on a leaf spring 70 fixed onthe adjacent end of the lifting frame.

\Vhen the lifting frame 23 is released from the control of hooks 29 andswings forward from the Fig. 4 position to the Fig. 6 posi-" tion toenable the work-sheets to be straightened, in order that the carbons maybe retracted. it is necessary to release the pack of work-sheets fromthe feed-rolls so as to enable the leading ends to be drawn intoengagement with a leading-end gage 71 before returning the platen to itsnormal position and severin the forward portions of the work-sheets ymeans of a knife, not shown.

Also in the present machine, in which a record-sheet is used, it isdesirable to advance the record-sheet automatically when the platen islifted, so that, when the platen is restored to its original position,there will be no danger of superposing a typewritten line on the onelast written before the lifting of the platen.

n order to release the ack of worksheets when the platen is lifteprovision may be made of a plate 72 mounted on the typewriter carriageand having a cam slot 73 to receive in 55 on bell-crank- 43 when thelifting rame 23 is swung about shaft 24.

The cam slot 73 is so shaped that, u on entrance of pin 55 therein, dueto the orward swing of the lifting frame, the bell-crank 43 will beswung to the rear sufliciently to withdraw the middle auxiliaryfeed-roll 33 only from a position to cooperate with main feed-roll 32,and during the rest of the movement of the lifting frame 23, thefeed-roll 33 will be maintained at a constant distance from feed-roll32, due to the fact that part of the cam slot 73 is substantiallyconcentric with shaft 24.

It will be understood that the automatic shifting of feed-roll 33 fromfeed-roll 32, 'while sufficient to release the pack of worksheetssuperposed on the record-sheet 14, is insufficient to Withdraw the endauxiliary feed-rolls 34 from the margins of the recordsheet, thusleaving the record-sheet under control of the main feed-roll 32.

It will be seen that the forward swing of the lifting frame willwithdraw pinion 67 from gear 66, thus breaking the driving connectionbetween the usual line-space mechanism and the feed-rolls by which thework-sheets are normally advanced. In order to effect automaticline-spacing or advance of the record-sheet in connection with theplaten-lifting operation, provision may be made of means to actuate mainfeed-roll 32, and consequently the auxiliary rolls in cotiperativerelation therewith by means of the star or detent wheel 68. To this end,a lever 74 is loosely mounted on shaft 36 adjacent star wheel 68 and apawl 75 pivoted on lever 74 at 76 is normally maintained in engagementwith the star wheel by means of a leaf spring 77. the lever beingmaintained with its upper end in forward position by means of a spring78 connected at one end to the lower end of said lever and at the otherend to the lifting frame 23.

As seen in Figs. 4, 5 and 6, movement of the lifting frame from the Fig.4 position to. the Fig. 5 position will effect release of the middleauxiliary roll 33 and consequently of the pack of work-sheets. Duringthe movement of the lifting frame from the Fig. 5 position to the Fig. 6position, however, the finger-piece 45 will remain substantially fixedwith reference to the lifting frame, and a pin 7 9 on lever 7 4, inwhich pin the spring 77 is supported, will strike the inclined upperedge of a plate 80 on the carriage and cause lever 74 to be swung aboutshaft 36, so as to actuate the star wheel 68, and, consequently, throughmain feed-roll 32 and the end auxiliary rolls 34, advance therecord-sheet.

Inasmuch as the forward feeding of the work-sheets is effectedexclusively by the feed-rolls at the delivery side of the platen, thelatter is preferably supported so as to be turned readily by the pull ofthe worksheets and the record-sheet thereover. It may, however, be.desirable to effect a reverse feed of the work-sheets at certain times.For this purpose. the left-hand end of axle 25, instead of beingjournaled directly in the lifting frame, is provided with a sleeve 81fixed thereon and journaled in the lifting frame. Provision is also madeof a gear 82 of the same size as gear 66 and normally in alinementtherewith, said gear 82 having a hub 83 mounted on sleeve 81 andmaintained thereon by means of a finger 84 on the lifting frame engagingin a groove 85 in said hub 83.

Connection between gear 66 and gear 82 may be effected by means ofpinion 67. which is made of suflicient width to mesh with both of saidgears, and a one-way driving connection may be provided between hub 83and sleeve 81 by means of a ball-clutch. indicated in general by 86. Itwill be understood that said gear 82 is normally driven forwardly withgear 66. It will be under stood that since gear 82 is normally drivenforward with gear 66, lost-motion will exist between said gear 82 andthe sleeve 81 on the platen axle 25. due to the one-way connection justdescribed. lVhen, however, the shaft 65 is given a reverse turn by meansof a finger-wheel 87, the ball-clutch 86 will be rendered effective toactuate the platen in a reverse direction.

Since, however, the pawl 75 on lever 74 is normally in engagement withthe star wheel 68 and the lower end of lever 74 is held against a stop88 by means of the spring 78. such reverse actuation of the platen willnormally be prevented. To enable such reverse actuation of the platen tobe effected, by means of finger-wheel 87, pawl 75 must be withdrawn fromstar wheel 68. To this end, provision may be made of a finger-piece 89pivotally mounted on lever 74 and provided with an eccentric or cam 89such that by turning said finger-piece to the proper position pawl 75will be withdrawn from star wheel 68 and maintained in such withdrawnposition.

In order that reverse rotation of the platen may effect reverse feedingof the work-sheets, provision is made of front and rear feed-rolls 90and 91, to cooperate with the platen 16. The feed-rolls 90 and 91 maynormally be maintained in cast-off position by means of cast-offmechanism of the usual type, not shown, but when reverse feeding isdesired said feed-rolls 90 and 91 are restored to operative positionwith reference to the platen.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus" described my invention, I claim:

1. In a typewriting machine, in combination, a revoluble platen, a frameto support said platen, a carriage, a shaft on said carriage on whichsaid frame is mounted to enable the frame and the platen therein to beswung from normal to abnormal position and the reverse, a primaryfeed-roll, secondary feed-rolls opposite said primary roll to cooperatetherewith, and means whereby, during the movement of the platen framefrom normal to abnormal position, one of said secondary feed-rolls willbe released in the initial portion of the movement, and then maintainedat a fixed distance from said primary roll during the remainder of themovement.

2. In a typewriting machine, in combination, a revoluble platen, meansto feed a plurality of work-sheets around said platen, comprising a.main roll on one side of the work-sheets, a central roll on the oppositeside, end rolls substantially in alinement with said central roll,positioned opposite the ends of said main roll, means for urging saidcentral roll and end rolls toward said mainroll, means to cause saidcentral roll and said end rolls to revolve at the same surface speed assaid main roll, but in the opposite direction, and means to release saidcentral roll and to actuate said main roll.

3. In a typewriting machine, in combination, a platen, a main feed-rollengaging a pack of work-sheets on the same side as said platen, aplurality of secondary feed-rolls engaging the opposite side of saidpack of Work-sheets and cooperating with said main feed-roll, means todrive said feed-rolls in unison, a finger-piece, and means wherebyactuation of said finger-piece will withdraw one of said secondaryfeed-rolls from its position to cooperate with said main feedroll, andfurther actuation of said fingerpiece will effect withdrawal of anotherof said plurality of secondary feed-rolls from said main feed-roll.

4. In a typewriting machine, in combination. a platen, means to draw apack of work-sheets past said platen, including a main feed-roll toengage one side of said pack, a central roll to engage the opposite sideof said pack of work-sheets, and end rolls to engage the margins of awider sheet.

underlying the other work-sheets, and means for withdrawing said centralfeed-roll from effective position and actuating said main feed-roll andend feed-rolls to advance the wider'sheet.

5. In a ty ewriting machine, in combina tion, a revo uble platen, a-mainfeed-roll Y to engage one side of a pack of work-sheets, 1 a centralfeed-roll to cooperate with the central part of said main feed-roll,engag-n ing said pack of work-sheets on the opposite side, a pair of endfeed-rolls to cooperate with the end portions of said platen to ressthereagainst the margins of a record sheet'of greater width than theother sheets, means to drive all of said feed-rolls atthe same surfacespeed, and means whereby the central roll may be withdrawn independentlyof the end rolls. to enable actuation of the record-sheet independentlyof the other work-sheets.

. 6. In a typewriting machine, "in combination, a revoluble platen, amain feed-roll at the delivery 'side of the platen'to engage work-sheetson one side, a central roll to 'engage the work-sheets on the oppositeside,

end rolls to engage the marginsof a recordsheet extending beyond theside edges of the other work-sheets, and means to effect withdrawal ofsaidcentral roll and subsequently of the end feed-rolls from the mainfeed-roll. o

7. In a typew-riting machine, in combination. a platen, means to feed aplural ty of work-sheets past said platen. comprising a main drivingroll over which the work is led, a shaft on the opposite side of thework. a'central roll carried by arms fixed on said shaft, so as tobecapable ofpressing the work against said main drivlng roll, two outerrolls, each carried by two arms 'means for drawing a pack of work-sheetsaround a portion of said platen, including a main feed-roll andsecondary feed-rolls engaging said pack on opposite sides, said rollsbeing supported in said liftlng frame,

1 a gear fixed to said main roll to actuate the same, means whereby saidsecondary rolls are actuated by said gear. means to actuate the mainroll-gear, including a gear on the lifting frame and a gear on saidcarriage in mesh with each other when said platen is in normal position,but out of mesh when said laten is lifted, and means to actuate saideed-rolls when the lifting 70 frame reaches the limit of its liftingmovement. v

9. In a typewriting machine, in combination, a carriage, a platen, aplaten-lifting frame mounted in said carriage, cooperating feed-rolls atthe delivery side of the platen to draw work-sheets around a portionthereof, driving connections between said feed-rolls, a star wheelconnected to one of said feed-rolls to rotate therewith, a lever mountedon said lifting frame, a pawl pivoted on said lever in positionto-cooperate with said star wheel, and a stop on said carriagepositioned to obstruct themovement of said lever when the lifting frameis actuated, and thereby actuate the lever to drive the feed-rolls.

10. In a typewriting machine, in combination, a platen, a guiding deviceto direct work-sheets around a portion of said platen, a pivoted liftingframe for said platen, means to draw a] pack of worksheets past saidplaten, including a main feed-roll and three secondary feed-rolls tocooperate therewith, means, including a finger-piece. mounted on saidlifting frame for withdrawing the central secondary roll. means wherebywithdrawal of said central roll beyond-a certain point will effectwithdrawal -of the end secondary rolls, and means to latch saidfinger-piece in position on said lifting frame when all of the secondaryrolls have been withdrawn.

11. In a typewriting machine, in combination, a carriage, a revolubleplaten, a 1 5 platen-lifting frame pivot-ally mounted in said.carriageymeans tofeed a pack of worksheets around said platen,including cooperating rolls mounted in said lifting frame at thedelivery side of the platen, linespacing mechanism on the carriage,means whereby the line-spacing mechanism may drive said cooperatingrolls when said platen is in normal position. but rendered ineffectiveby the lifting of said platen, and means for actuating said coiiperatingrolls at the end of a lifting movement of said lifting frame. f

12. In a typewriting machine. in combination, a platen, means to feed aplurality of work-sheets around the platen, comprising a maindriving-roll at the delivery side of the platen, secondary driving-rollscooperating with said main driving-roll to grip the worksheetstherebetween, said secondary drivingrolls comprising a middle roll andtwo end rolls, means yieldably urging said secondary driving-rollsagainst said main driving-roll, means to withdraw said middle roll froma position to cooperate with said main drivingroll, and means wherebywithdrawal of the middle roll beyond a certain distance will effect thewithdrawal of said end rolls.

13. In a typewriting machine, in combination, a carriage, a revolubleplaten, a platenlifting frame pivoted on said carriage, a gear on saidframe and co-axial with said platen, a one-way clutch between the saidplaten and said gear, whereby the gear will be effective only forreverse actuation of the platen, means to feed a pluralityof worksheetsover said platen including a line-space shaft in alinement with the axisof the platen when the latter is in normal position, a gear on theline-space shaft of the same size of the first-mentioned gear, a pinionon the lifting-frame, meshing with both of the said gears when theplaten is in normal position, means to yieldably maintain the gears andpinion in position including a star wheel, means to actuate the starwheel in forward direction when the lifting-frame is swung, including apawl normally in engagement with the star wheel, and means forwithdrawing the pawl from the star wheel to enable reverse feeding ofthe platen.

14. In a typewriting machine, in combina tion, a carriage, a platen, ashaft mounted on said carriage, a platen-lifting frame, loosely mountedon said shaft, worksheet feeding means including a main feed-roll at thedelivery side of the platen, secondary feedrolls to cooperate with saidmain feed-roll, comprising a central and end rolls, a shaft for each ofsaid feed-rolls. universal joints connecting adjacent ends of thesecondary feed-roll-shafts, means to drive said main feed-roll and saidsecondary feedrolls in unison, arms fixed on said liftingframe-shaft, inwhich the central feed-roll-- shaft is mounted, a pair of arms tosupport the shaft of each of said end rolls loosely mounted on thelifting-frame-shaft, but connected together, so as to move as onemember, a finger-piece pivoted on the platenlifting-frame, and meanscontrolled by said finger-piece for actuating the platen-frameshaft towithdraw the central roll and subsequently the end rolls, a pin on saidfingerpiece, and a plate on said carriage having a cam slot to receivesaid pin, the outer portion of said slot being shaped to causewithdrawal of said central roll only, and the rest of said cam slotbeing substantially concentric with said lifting-frame-shaft, wherebythe central roll will be maintained at a fixed distance from said mainroll during the rest of the lifting movement.

15. In a typewriting machine, in combination, a revoluble platen, apivotally mounted lifting frame therefor, work-sheet-feedingmeans at thedelivery side of said platen, including a main feed-roll and secondaryfeed: rolls to coiiperate with the main feed-roll to grip a plurality ofsuperposed work-sheets and a record sheet therebetween, said secondaryfeed-rolls comprising a central roll, to cooperate with said pluralityof worksheets, and end rolls to cooperate with margins of the recordsheet extending beyond the edges of the work-sheets, a shaft for themain feed-roll, journaled in said lifting frame, shafts for each of saidsecondary feed-rolls, flexible connections between the adjacent ends ofthe shafts of said secondary feed-rolls to cause them to rotate,together, while permitting the secondary feed-rolls to be differentlyspaced from the main feedroll, means whereby the'secondary feed-rollsare driven from the shaft of said main feedroll, a pawl-and-ratchetmechanism for actuating said main feed-roll-shaft, including a wheel onsaid shaft, a member movably mounted on said lifting frame, and a pawlon said member, normally in engagement with said wheel, and meansincluding a finger-piece, whereby the pawl may be withdrawn from thewheel to permit reverse feeding of said feed-rolls.

15. In a typewriting machine, the combination with a revoluble platen,of anti-creeping means for drawing around said platen a plurality ofsuperposed work-sheets and a record-sheet of greater Width than andunderlying said worksheets, including feedrolls to grip the work-sheetsand record sheet therebetween, and means to release the worksheets fromsaid feed-rolls and advance the record-sheet by means of saidfeed-rolls.

17. In a typewriting machine, the combination with a revoluble platen,of means for drawing a plurality of superposed work sheets and arecord-sheet around said platen, including feed-rolls to grip saidwork-sheets and record-sheet therebetween, and means to positivelyactuate said feed-rolls, means to release said work-sheets, and meansfor actuating said feed-rolls while said work-sheets are released,thereby advancing the recordsheet.

18. In a typewriting machine, the combination, with a revoluble platen,of feed-. rolls at the delivery side of the platen to grip therebetweena plurality of webs and a record-sheet of greater width than said webs,line-space mechanism to actuate all of said feed-rolls at the sameperipheral speed, a second line-space mechanism, and means to render thefirst mentioned linespace mechanism ineffective, to release the webs,and to actuate the second line-space mechanism to drive said feed-rollsand thereby advance the record-sheet.

19. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which a, pack ofwork-sheets including a wider sheet may be fed, of end rolls to engagethe margins of the wider sheet, means to operate said rolls to feed thepack of work-sheets, means for withdrawing said central roll from itseffective position, and means to feed the wider sheet independently ofthe other work-sheets.

20. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which a pack ofwork-sheets including a wider sheet may be fed, of end rolls to engagethe margins of the wider sheet, means to operate said rolls to feed thepack of work-sheets,

- means for withdrawing said central roll from its effective position,means to feed the wider sheet independently of the other work-sheets,and a finger-piece to render said central roll and said end rollsinefl'ective at will.

21. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which'a pack ofwork-sheets including a wider sheet may be fed, of end rolls to engagethe margins of the wider sheet, means to operate said rolls to feed thepack of work-sheets, means for withdrawing said central roll from itseffective position, means to feed the wider sheet independently of theother work-sheets, and resilient means between said central roll, andsaid end rolls to press the latter toward said main roll. Y

22. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which a pack ofwork-sheets including a wider sheet may be fed, of end rolls to engagethe margins of the Wider sheet, means to operate said rolls to feed thepack of work-sheets, means for withdrawing said central roll from itseffective position, means to feed the wider sheet independently of theother worksheets, a support for said main roll, supports for said endrolls, and resilient means between the support of the central roll andthe support of each end roll, to press the latter toward said main roll.

. 23. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll, between which a pack ofwork-sheets including a wider sheet mav be fed, of end rolls to engagethe margins of the wider sheet, means to operate said'rolls to feed thepack of work-sheets means for withdrawing said central roli from itseffective position, means to feed the wider sheet independently of theother worksheets, a support for said main roll, supports for said endrolls, resilient means between the support of the central roll and thesupport of each end roll, to press the latter toward said main roll, afinger-pieceto render said central roll ineffective, and means on thesupport for the central roll to engage the support of each end roll,whereby a further movement of the finger-piece may render the end rollsineffective.

24. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which a pack ofwork-sheets including a wider sheet with interleaved carbons may be fed,of end rolls to engage the margins of the wider sheet, a swing-frame tochange the position of parts to permit the pack of worksheets to bestraightened out prior to shifting the carbons relatively thereto, meansto render the central 'roll ineffective when the swingframe is actuated,and means to advance the wider sheet after the central roll. has beenrendered ineffective.

25. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which a pack ofwork-sheets including a wider sheet with interleaved carbons may be fed,of end rolls to engage the margins of the wider sheet, line-spacingmechanism to feed said pack of worksheets, a swing-frame to change theposition of parts to permit the pack of work-sheets to be straightenedout prior to shifting the carbons relatively thereto, means to renderthe central roll ineffective when the swing-frame is actuated, andline-spacing mechanism to feed the wider sheet after the central rollhas been rendered ineffective.

26. In a typewriting machine, the combination with a main roll and acentral roll opposed to said main roll between which a pack ofwork-sheets including a wider sheet may be fed, of end rolls to engagethe margins of the wider sheet, said end rolls having drivingconnections with said central roll, means to operate said rolls to feedthe pack of work-sheets, means for withdrawing said central roll fromits effective position without disturbing the driving relation betweenthe central roll and the end rolls, and means to feed the wider sheet bysaid end rolls after the central roll has been rendered ineffective.

IioHN WALDHEIM.

\Vitnesses:

EDITH B. LIBBEY, JENNIE P. THORNE.

